Steam-turbine.



PATENTED JUNE 25, 1907.

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A. H; shm'm STEAM-TURBINE.

APPLICATION FILED JAN. 2, 1908.

l llllllllllll|lllll lllllllllu'IlI-l nnrrn STATES PATENT OFFICE.

ANDREW E. SMITH, or NEW YORK, N. Y.

STEAM-TURBINE,

Specification of Letters Patent.

Patented June 25,1907. I

Application filed January 2,1906. Serial No. 294,058-

- tion.

The object of my invention is to provide certain improvements in steamturbine engmes whereby the eiliciency of the engine is increased byincreasing'theforce of impact of the steam by the introduction of oilinto the steam just-before it is brought into engagement with the pistonvanes or wingsl A practical embodiment of my invention -is representedin the accompanying drawing which represents so much of a steam turbineengine as will give a clear understanding of my invention, the partsbeing shown partially in side elevation and partially in section.

The cylinder of the engine is denoted by 1, the piston by 2 and thepiston vanes or wings by 3.

The expanding steam nozzle isdenoted by l, through which steam is forcedto'the vanes or wings from any suitable source of supply.

An oil nozzle 5 is located within the steam nozzle 4, to which oilnozzle a feed pipe 6 leads from an oil reservoir 7. This oil feed pipe 6is broughtinto contact with a heater 8 of any well known and a provedform which will serve to raise the oil to the proper high temperature.Oil may be fed to the reservoir through a suitable feed pipe 9. Topermit the oil to be fed under pressure, an air pressure pipe 10 isprovided for the reservoir 7 which pipe leads from any suitable means,not shown herein, for exerting pressure on the oil within the reservoir.

In operation, as the steam is passed through the nozzle 4 intoengagement with the vanes or wings 3 oithe fpiston '2, the oil isintroduced into the jet 0 steam through" the nozzle 5. This will serveto increase the momentum of the steam by adding to its weight and thusincrease its efficiency as a driving force.

It is intended to use an oil which will stand a very high heat withoutvolatilizing so that the oil may be introduced into the steam under hightemperature so that it will tend to prevent the rapid condensation ofthe steam as the oil will hold its elements of heat 'a considerablygreater time than will the steam. Furthermore, it is intended to feedthe oil' under pressure so that the velocity of the steam will not beimpaired. It is also intended that the oil should be used in largequantities with the object in view of materially increasing the momentumof the steam and thereby adding to its effective range.

While I have shown the oil as being introduced into the steam at a pointwhere it first beigns to expand before impinging against the pistonvanes or wings, it is to be under .stood that the oil may be introducedat other points if so desired.

What I claim is: 1. In a steam turbine engine, a steam nozzle, a sourceof oil supply separate from the steam nozzle and means iorintroducing Yoil from said source of oil supply-into the steam nozzle.

2. In a steam turbine engine, a steam nozzle, a source of oil supplyseparate from the steam nozzle and means forintroducing oil at a hightemperature from said source of oil supply into the steam nozzle.

3. n a steam turbine engine, a steam nozzle, a source-of oil supply searate from the steam nozzle and meansfor-lntroduclng 011 under pressurefromthe sald source of 011.

supply into the steam nozzle.

4. In a steam turbine engine, a steam nozzle, asource of oil supply,separate from the steam nozzle, and means for introducing oil at a hightemperature and under'pressure from1 said source of oil supply into thesteam nozz e.

5. In a steam turbine engine, anex and ing steam nozzle and meansfor-intro ucing oil into the steam as itis expanding in-the said nozzle.

In testimony, that-I claim the foregoing as my invention, I have signedmy name'in pres ence of two witnesses, this 29thday of DGCQIW ber, 1905.

ANDREW H. SMITH.

Witnesses r FREDK. HAYNEs, HENRY THIEME.

